Atmospheric CO 2 and O 3 alter competition for soil nitrogen in developing forests
dc.contributor.author | Zak, Donald R. | en_US |
dc.contributor.author | Kubiske, Mark E. | en_US |
dc.contributor.author | Pregitzer, Kurt S. | en_US |
dc.contributor.author | Burton, Andrew J. | en_US |
dc.date.accessioned | 2012-04-04T18:42:38Z | |
dc.date.available | 2013-06-11T19:15:41Z | en_US |
dc.date.issued | 2012-04 | en_US |
dc.identifier.citation | Zak, Donald R.; Kubiske, Mark E.; Pregitzer, Kurt S.; Burton, Andrew J. (2012). "Atmospheric CO 2 and O 3 alter competition for soil nitrogen in developing forests." Global Change Biology 18(4): 1480-1488. <http://hdl.handle.net/2027.42/90539> | en_US |
dc.identifier.issn | 1354-1013 | en_US |
dc.identifier.issn | 1365-2486 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/90539 | |
dc.description.abstract | Plant growth responses to rising atmospheric CO 2 and O 3 vary among genotypes and between species, which could plausibly influence the strength of competitive interactions for soil N . Ascribable to the size‐symmetric nature of belowground competition, we reasoned that differential growth responses to CO 2 and O 3 should shift as juvenile individuals mature, thereby altering competitive hierarchies and forest composition. In a 12‐year‐long forest FACE experiment, we used tracer 15 N and whole‐plant N content to assess belowground competitive interactions among five P opulus tremuloides genotypes, between a single P . tremuloides genotype and B etula papryrifera , as well as between the same single P . tremuloides genotype and A cer saccharum . Under elevated CO 2 , the amount of soil N and 15 N obtained by the P . tremuloides genotype common to each community was contingent on the nature of belowground competition. When this genotype competed with its congeners, it obtained equivalent amounts of soil N and tracer 15 N under ambient and elevated CO 2 ; however, its acquisition of soil N under elevated CO 2 increased by a significant margin when grown in competition with B . papyrifera (+30%) and A . saccharum (+60%). In contrast, elevated O 3 had no effect on soil N and 15 N acquisition by the P . tremuloides genotype common in each community, regardless of competitive interactions. Under elevated CO 2 , the rank order of N acquisition among P . tremuloides genotypes shifted over time, indicating that growth responses to CO 2 change during ontogeny; this was not the case under elevated O 3 . In the aspen‐birch community, the competitive advantage elevated CO 2 initially conveyed on birch diminished over time, whereas maple was a poor competitor for soil N in all regards. The extent to which elevated CO 2 and O 3 will shape the genetic structure and composition of future forests is, in part, contingent on the time‐dependent effects of belowground competition on plant growth response. | en_US |
dc.publisher | U.S. Department of Agriculture Forest Service North Central Experiment Station, General Technical Report NC‐214 | en_US |
dc.publisher | Wiley Periodicals, Inc. | en_US |
dc.subject.other | Interspecific Competition | en_US |
dc.subject.other | Soil N | en_US |
dc.subject.other | Belowground Competition | en_US |
dc.subject.other | Intraspecific Competition | en_US |
dc.subject.other | Elevated O 3 | en_US |
dc.subject.other | Elevated CO 2 | en_US |
dc.title | Atmospheric CO 2 and O 3 alter competition for soil nitrogen in developing forests | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Geology and Earth Sciences | en_US |
dc.subject.hlbsecondlevel | Ecology and Evolutionary Biology | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/90539/1/gcb2596.pdf | |
dc.identifier.doi | 10.1111/j.1365-2486.2011.02596.x | en_US |
dc.identifier.source | Global Change Biology | en_US |
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dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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